CA1116434A - Dosimeter having a low air flow rate - Google Patents
Dosimeter having a low air flow rateInfo
- Publication number
- CA1116434A CA1116434A CA000336388A CA336388A CA1116434A CA 1116434 A CA1116434 A CA 1116434A CA 000336388 A CA000336388 A CA 000336388A CA 336388 A CA336388 A CA 336388A CA 1116434 A CA1116434 A CA 1116434A
- Authority
- CA
- Canada
- Prior art keywords
- air
- dosimeter
- pump
- circuit
- orifice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000008859 change Effects 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000006872 improvement Effects 0.000 claims abstract description 3
- 230000010349 pulsation Effects 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000004817 gas chromatography Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
- Measurement Of Radiation (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Measuring Volume Flow (AREA)
- Compressor (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/948,037 US4257746A (en) | 1978-10-02 | 1978-10-02 | Dosimeter having a low air flow rate |
| US948,037 | 1978-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1116434A true CA1116434A (en) | 1982-01-19 |
Family
ID=25487159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000336388A Expired CA1116434A (en) | 1978-10-02 | 1979-09-26 | Dosimeter having a low air flow rate |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4257746A (es) |
| JP (1) | JPS5550177A (es) |
| AR (1) | AR218559A1 (es) |
| AU (1) | AU523661B2 (es) |
| BE (1) | BE879117A (es) |
| BR (1) | BR7906070A (es) |
| CA (1) | CA1116434A (es) |
| CH (1) | CH641564A5 (es) |
| DE (1) | DE2939957A1 (es) |
| ES (1) | ES484663A1 (es) |
| FR (1) | FR2438291A1 (es) |
| GB (1) | GB2033109B (es) |
| IT (1) | IT1193235B (es) |
| MX (1) | MX147570A (es) |
| NL (1) | NL7907321A (es) |
| PT (1) | PT70261A (es) |
| SE (1) | SE452200B (es) |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040928B1 (en) * | 1980-05-14 | 1984-09-19 | ROTHEROE & MITCHELL LIMITED | Gas sampler |
| US4384825A (en) * | 1980-10-31 | 1983-05-24 | The Bendix Corporation | Personal sampling pump |
| JPS57108635A (en) * | 1980-12-26 | 1982-07-06 | Toyota Motor Corp | Fixed capacity type exhaust gas collecting device |
| GB2091910B (en) * | 1980-12-29 | 1984-09-19 | Landi Den Hartog Bv | Fluid pressure regulating system |
| JPS58111738A (ja) * | 1981-12-24 | 1983-07-02 | ギリアン・インストルメント・コ−ポレ−シヨン | 流体試料採取器 |
| FR2551869B1 (fr) * | 1983-09-14 | 1988-03-11 | Ifacap | Procede de prelevement d'air sur un poste de travail et dispositif de mise en oeuvre |
| US4543891A (en) * | 1984-04-12 | 1985-10-01 | Westinghouse Electric Corp. | Apparatus and process for heat treatment |
| US4527953A (en) * | 1984-10-12 | 1985-07-09 | E. I. Du Pont De Nemours And Company | Pump unit for sampling air |
| DE3509360A1 (de) * | 1985-02-14 | 1986-08-14 | Bbc Brown Boveri & Cie | Verfahren zur messung des sauerstoffgehalts im abgas von brennkraftmaschinen |
| US4841404A (en) * | 1987-10-07 | 1989-06-20 | Spring Valley Associates, Inc. | Pump and electric motor protector |
| DE3822360A1 (de) * | 1988-07-01 | 1990-01-04 | Kettrup Antonius | Gasprobennehmer |
| JPH02118430A (ja) * | 1989-09-05 | 1990-05-02 | Gilian Instr Corp | 流体試料採取器 |
| FR2651577A1 (fr) * | 1989-09-05 | 1991-03-08 | Siderurgie Fse Inst Rech | Procede et dispositif pour mesurer la concentration dans l'atmosphere de poussieres en suspension entrainees par le vent a partir de tas de materiaux pulverulents. |
| DE4113695A1 (de) * | 1991-04-26 | 1992-10-29 | Bayer Ag | Kontinuierlich betriebener gasanalysator |
| EP0642376A4 (en) * | 1991-11-01 | 1995-04-12 | Sorenson Laboratories, Inc. | Dual mode laser smoke evacuation system with sequential filter monitor and vacuum compensation. |
| JP3997318B2 (ja) * | 1998-02-16 | 2007-10-24 | 株式会社サタコ | ポンプの制御方法及び制御装置 |
| DE19812551C2 (de) * | 1998-03-21 | 2002-01-24 | Jakob Hois | Vorrichtung zum Prüfen der mikrobiologischen Qualität eines gasförmigen Mediums |
| US8790496B2 (en) | 2007-03-13 | 2014-07-29 | Heartland Technology Partners Llc | Compact wastewater concentrator and pollutant scrubber |
| WO2008112793A1 (en) * | 2007-03-13 | 2008-09-18 | Gei Development Llc | Wastewater concentrator |
| US8679291B2 (en) | 2007-03-13 | 2014-03-25 | Heartland Technology Partners Llc | Compact wastewater concentrator using waste heat |
| US8801897B2 (en) * | 2007-03-13 | 2014-08-12 | Heartland Technology Partners Llc | Compact wastewater concentrator and contaminant scrubber |
| US10005678B2 (en) | 2007-03-13 | 2018-06-26 | Heartland Technology Partners Llc | Method of cleaning a compact wastewater concentrator |
| US8741100B2 (en) | 2007-03-13 | 2014-06-03 | Heartland Technology Partners Llc | Liquid concentrator |
| US7905853B2 (en) | 2007-10-30 | 2011-03-15 | Baxter International Inc. | Dialysis system having integrated pneumatic manifold |
| MX360400B (es) | 2009-02-12 | 2018-10-31 | Heartland Tech Partners Llc | Concentrador compacto de aguas residuales compacto que usa el calor de desechos. |
| US8721771B2 (en) | 2011-01-21 | 2014-05-13 | Heartland Technology Partners Llc | Condensation plume mitigation system for exhaust stacks |
| US9296624B2 (en) | 2011-10-11 | 2016-03-29 | Heartland Technology Partners Llc | Portable compact wastewater concentrator |
| US8808497B2 (en) | 2012-03-23 | 2014-08-19 | Heartland Technology Partners Llc | Fluid evaporator for an open fluid reservoir |
| FR2991452B1 (fr) * | 2012-05-30 | 2015-01-16 | Ac Sp Etude & Rech En Hygiene Ind | Procede et dispositif de prelevement d'air pour mesure d'amiante atmospherique |
| US8741101B2 (en) | 2012-07-13 | 2014-06-03 | Heartland Technology Partners Llc | Liquid concentrator |
| US9199861B2 (en) | 2013-02-07 | 2015-12-01 | Heartland Technology Partners Llc | Wastewater processing systems for power plants and other industrial sources |
| US8585869B1 (en) | 2013-02-07 | 2013-11-19 | Heartland Technology Partners Llc | Multi-stage wastewater treatment system |
| US9651038B2 (en) * | 2013-09-27 | 2017-05-16 | Met One Instruments, Inc. | Pulsation suppressing air flow system for an air sampling instrument |
| JP2018503764A (ja) * | 2014-11-27 | 2018-02-08 | プロフタガレン アクチエボラグＰｒｏｖｔａｇａｒｅｎ Ａｂ | 低流量のポンプ制御 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3198121A (en) * | 1962-09-26 | 1965-08-03 | Syncroflo Inc | Tankless water pressure system |
| AT254377B (de) * | 1965-03-18 | 1967-05-26 | Oemv Ag | Verfahren und Einrichtung zum Nutzbarmachen brennbarer Abgase von Raffinerien oder andern Anlagen |
| FR1482123A (fr) * | 1966-04-08 | 1967-05-26 | Siersatom Sa | Appareil de prélèvement d'aérosols |
| US3501899A (en) * | 1968-05-02 | 1970-03-24 | Int Chem & Nuclear Corp | Constant-flow air sampler |
| US3789902A (en) * | 1971-06-18 | 1974-02-05 | Chemical Construction Corp | Method for concentrating dilute acidic solutions |
| US3953152A (en) * | 1973-08-02 | 1976-04-27 | Sipin Anatole J | Regulated fluid pump |
| CA1010382A (en) * | 1973-08-29 | 1977-05-17 | Beckman Instruments | Gas stream cleaning system |
| US3882861A (en) * | 1973-09-24 | 1975-05-13 | Vital Assists | Auxiliary control for a blood pump |
| US3965748A (en) * | 1974-11-18 | 1976-06-29 | Rader Companies, Inc. | Apparatus for automatically measuring particulate emissions in gas flow |
| US4063824A (en) * | 1975-08-05 | 1977-12-20 | E. I. Du Pont De Nemours And Company | Chemical dosimeter having a constant flow air sampling pump |
| US4091674A (en) * | 1976-06-09 | 1978-05-30 | Amey Guy C | Air sampling pump |
| US4123932A (en) * | 1977-05-25 | 1978-11-07 | E. I. Du Pont De Nemours And Company | Dosimeter for monitoring working areas |
-
1978
- 1978-10-02 US US05/948,037 patent/US4257746A/en not_active Expired - Lifetime
-
1979
- 1979-09-20 MX MX179343A patent/MX147570A/es unknown
- 1979-09-24 BR BR7906070A patent/BR7906070A/pt not_active IP Right Cessation
- 1979-09-26 CA CA000336388A patent/CA1116434A/en not_active Expired
- 1979-09-28 CH CH873979A patent/CH641564A5/de not_active IP Right Cessation
- 1979-09-28 AU AU51305/79A patent/AU523661B2/en not_active Ceased
- 1979-10-01 SE SE7908111A patent/SE452200B/sv not_active IP Right Cessation
- 1979-10-01 PT PT70261A patent/PT70261A/pt unknown
- 1979-10-01 GB GB7933925A patent/GB2033109B/en not_active Expired
- 1979-10-01 BE BE0/197413A patent/BE879117A/fr not_active IP Right Cessation
- 1979-10-01 IT IT26162/79A patent/IT1193235B/it active
- 1979-10-01 FR FR7924418A patent/FR2438291A1/fr active Granted
- 1979-10-02 JP JP12727079A patent/JPS5550177A/ja active Granted
- 1979-10-02 ES ES484663A patent/ES484663A1/es not_active Expired
- 1979-10-02 NL NL7907321A patent/NL7907321A/nl not_active Application Discontinuation
- 1979-10-02 DE DE19792939957 patent/DE2939957A1/de active Granted
- 1979-10-10 AR AR278292A patent/AR218559A1/es active
Also Published As
| Publication number | Publication date |
|---|---|
| MX147570A (es) | 1982-12-14 |
| IT7926162A0 (it) | 1979-10-01 |
| DE2939957A1 (de) | 1980-04-10 |
| GB2033109A (en) | 1980-05-14 |
| SE7908111L (sv) | 1980-04-03 |
| GB2033109B (en) | 1982-12-22 |
| FR2438291A1 (fr) | 1980-04-30 |
| JPS5550177A (en) | 1980-04-11 |
| IT1193235B (it) | 1988-06-15 |
| ES484663A1 (es) | 1980-06-16 |
| PT70261A (en) | 1979-11-01 |
| US4257746A (en) | 1981-03-24 |
| AU523661B2 (en) | 1982-08-05 |
| DE2939957C2 (es) | 1987-08-27 |
| FR2438291B1 (es) | 1984-04-13 |
| BR7906070A (pt) | 1980-07-15 |
| BE879117A (fr) | 1980-04-01 |
| AU5130579A (en) | 1980-04-17 |
| CH641564A5 (de) | 1984-02-29 |
| SE452200B (sv) | 1987-11-16 |
| AR218559A1 (es) | 1980-06-13 |
| NL7907321A (nl) | 1980-04-08 |
| JPS6247250B2 (es) | 1987-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |